Marc_U Posted November 13, 2005 Share Posted November 13, 2005 I have been using Corsair 512M RAM (CMX512-3200C2PRO) the past few years, but now needed to upgrade, so bought a TWINX1024-3200C2PRO set, with the intention of having 1.5G RAM. But when I try to fit them (either all three or just two of them) in Dual Channel DDR (DIMM 1, 2 & 3, or DIMM 1 & 3), the computer gives one long beep, and then stops, with no display, the fans & hard-drive running. And if I've got the case open, the Corsair LEDs initially flicker as normal, then freeze, and then LEDs all go out on one module, then the next module, and the next (if there are 3 are fitted). :confused: I can get the computer to boot up with 1G of RAM, with two cards in non Dual Channel DDR (DIMM 1 & 3), but some of my software that works fine (but slowly) with 512M RAM, will not run at all with 1G RAM, so something can't be right. What are the correct setting for my motherboard, to get the RAM working correctly (preferable with all 3 modules)? My FSB is 166MHz, and Memory speed is set by SPD (to 400MHz). Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 15, 2005 Corsair Employee Share Posted November 15, 2005 Can you tell me our modules part# (How To Read the Memory Label) and revision of all of your modules? Link to comment Share on other sites More sharing options...
Marc_U Posted November 18, 2005 Author Share Posted November 18, 2005 My RAM Part Numbers & Version are as follows: CMX512-3200C2PRO - XMX3202v2.1 CMX512-3200C2PRO - XMX3202v4.1 CMX512-3200C2PRO - XMX3202v??? (The label is badly printed, but it looks like 4.1). Regards, Marc U Link to comment Share on other sites More sharing options...
Marc_U Posted November 26, 2005 Author Share Posted November 26, 2005 As an addition detail, I have changed my RAM settings to the following: 2.5 3 3 6 Based on what I have read else where on this site, and while this has enabled me to run with 1024 MB RAM (2 off. 512 MB), I still can't get it to run with all three 512MB cards. :sigh!: Can anyone help? Link to comment Share on other sites More sharing options...
Wired Posted November 26, 2005 Share Posted November 26, 2005 Set memory speed to match FSB. Also, it's never recommended to mix memory of different version #s. Try 3-3-3-8 as well. Link to comment Share on other sites More sharing options...
Marc_U Posted November 26, 2005 Author Share Posted November 26, 2005 I think the problem is to do with the DDR Dual Channel settings. Because I have reduced my memory speed setting to 100% (instead of SPD), so my memory speed = FSB = 166Mhz, to avoid different module versions issue, just put my two 4.1 version units into slots 1 & 3. And I got the same old problem with the long beep, then nothing happening. :(: Changing the settings from 2.5-3-3-6 to 3-3-3-8 didn't help either, so I have change these back as some of my software (X3 - Reunion) will not run with 3-3-3-8 settings. Can anyone help??? :confused: Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 30, 2005 Corsair Employee Share Posted November 30, 2005 XMS3200C2 Ver 2.1 will not support Cas 3, only Cas 2 or Cas 2.5 is supported and I would not suggest mixing module versions with this MB. Link to comment Share on other sites More sharing options...
Marc_U Posted November 30, 2005 Author Share Posted November 30, 2005 OK, assuming that I just put my v2.1 module to one side, and just use my Twinx pair. I still cannot get my computer to run in Dual Channel mode.:mad: Does any one out there have this motherboard (GA-7N400 Pro2 (v.1.x) running with Corsair RAM in Dual Channel mode, and if so which modules, and what settings? :confused: Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 30, 2005 Corsair Employee Share Posted November 30, 2005 What slots are installing them in, they should be in slots 1-3 or 2-3! Link to comment Share on other sites More sharing options...
Marc_U Posted November 30, 2005 Author Share Posted November 30, 2005 I have tried them always possible: 1 & 2 : Ok - Non-Dual Channel 1 & 3 : Dead apart from single long beep 1 & 4 : Dead apart from single long beep 2 & 4 : Dead apart from single long beep 2 & 3 : Dead apart from single long beep 3 & 4 : Dead with no beep And Gigabyte Tech are unhelpful, saying it should just auto detect, suggesting that maybe Corsair are not Dual Channel compatible. :mad: Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted December 1, 2005 Corsair Employee Share Posted December 1, 2005 If the modules are exactly the same and the system posts and passes http://www.memtest.org when you have them in slots 1-2, that would suggest a peroblem with the MB and I would get it replaced. Link to comment Share on other sites More sharing options...
Marc_U Posted December 1, 2005 Author Share Posted December 1, 2005 I think you are right, I will have to get my credit card out and start looking for a new M/Board. Thanks for all the help. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted December 2, 2005 Corsair Employee Share Posted December 2, 2005 No problem, please let me know! Link to comment Share on other sites More sharing options...
Marc_U Posted December 4, 2005 Author Share Posted December 4, 2005 I have got a new M/Board, a MSI K7N2 Delta2-FSR, with a whole lot setting up headache, but thank to other threads on this site, it is all running OK. :cool: I think I now know what may have been the problem with my GA-7N400 board. :o: When I removed it, to fit my new M/board, I found 3 additional metal mounting posts, that must have been fitted for the M/board prior to the GA7N400, but which the GA board did not use, and one of these was roughly under the DIMM socket areas.:eek: So it must have been shorting some of the DIMMs out or something, but I am not putting it back in to find out if my old M/board is OK now, or not. I have messed around enough as it is.:!: (Was up nearly all last night trying get the new M/board working.) Thanks for all your help. Link to comment Share on other sites More sharing options...
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